Malicious PDF — malware analysis report

Static analysis result for SHA-256 0df85d9892bb1f21…

MALICIOUS

PDF

35.2 KB Created: 2021-06-20 16:26:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: bf9267e3e601915a0aecbb194014bbcf SHA-1: a963f9d0c8070cdb8f255cf1b50e97f349d03c54 SHA-256: 0df85d9892bb1f215b55cd447466fb4c053c5ac7e415c294720fae9d448a2681
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that lead to known malicious redirectors and sites offering game-related cheats and generators. The document body and heuristics indicate a lure for free in-game items, likely to download further malware or phish for credentials. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/cool-hacked-weapons-roblox-script-game-hack In PDF document text
    • http://magnipsor.su/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://magnipsor.su/images/free-solobird-guitar-roblox_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/roblox-noclip-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://magnipsor.su/images/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://magnipsor.su/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/free-download-roblox-apk_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/how-to-get-free-stuff-on-roblox-games_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/how-to-use-speed-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/inf-health-script-roblox-hack_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/win-free-robux_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/free-robux-and-limiteds_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000325f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x325F 22152 bytes
SHA-256: 5e83b4353238c4726e9a38a71cc72698f203971ffffdba7045482d0ad641f188
font_01_sfnt_off00006371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6371 19428 bytes
SHA-256: eae4831fb84a6031f8252f35c13f0114303b36566e37270c0595aa2ee08fe79a

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